Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 143 for “"Fundamental Physics"”.
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Cosmological signatures of fundamental physics
… cosmological signatures of certain aspects of fundamental physics, and how cosmological observables can be used to constrain properties of fundamental particles. Over the past decades, increasingly precise measurements in cosmology have become powerful probes of fundamental physics - for …
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Constraining fundamental physics from cosmology
I use mathematical models and numerical simulations to constrain cosmological inflation, the seeds of structure, and the mass of the neutrino. I revisit arguments that simple models of inflation with a small red tilt in the scalar power spectrum generically yield an observable tensor spectrum. I …
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Inflationary cosmology and fundamental physics
… at the interface between cosmology, particle physics, and field theory. In the first half, we examine topics that are directly related to inflation: axions, string theory, and non-minimally coupled fields. In particular, we constrain the allowed parameter space of inflationary axion cosmology, …
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Binary pulsars: evolution and fundamental physics
In the standard theory of pulsar spin-up, a neutron star (NS) in a binary system accretes matter from its companion star; this serves to transfer angular momentum to the NS, increasing the spin frequency of the pulsar. Measurement of the orbital parameters and system geometry, and in particular the …
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Fundamental physics in extreme-gravity environments
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms
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Exploring fundamental physics with gravitational waves
In this dissertation I explore several topics in the field of gravitational wave astronomy. By means of introduction, I review the historical evolution of humanity's understanding of the mechanics of gravity, and the events which eventually led to the first ever detection of gravitational waves in …
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Radioactive Atoms and Molecules for Fundamental Physics
The Standard Model (SM) of particle physics and the theory of General Relativity represent two of the greatest achievements in physics in the past century. However, despite their success, many experimental observations remain unanswered: What is the nature of Dark Matter and Dark Energy? Why is …
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Fundamental physics from observations of the early universe
… will enable cosmology to answer some of the fundamental questions in physics. The linear perturbation theory may not be accurate enough to interpret the observations from Planck and future CMB experiments. Second order effects may in particular be important in constraining the non-Gaussianity …
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Early universe cosmology as a probe of fundamental physics
… represents a unique opportunity to study physics at energies far beyond the reach of terrestrial laboratories. In particular, observations of the cosmic microwave background radiation supports the idea for an early phase of accelerated expansion called inflation. While the simplest …
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Gravitational waves as an avenue for exploring fundamental physics
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
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Exploring fundamental physics and astrophysics with gravitational-wave sources
In this thesis, I investigate the new physics that can be learnt by the current and future gravitational wave (GW) observations. With the current observations, I study how multiple binary black hole (BBH) spin measurements can be combined by hierarchical Bayesian framework to search for ultralight …
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Tests of fundamental physics with gravitational waves: Theory and application
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
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Fundamental physics and application of plasma actuators for high-speed flows
In this dissertation, a detailed investigation is given discussing three plasma-based flow control methods. These methods included plasma generated by laser energy, microwaves, and electric arc. The plasma generated by laser energy was also applied to a sonic transverse jet in a supersonic cross …
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Unveiling fundamental physics with high-resolution X-ray spectroscopy of Active Galactic Nuclei.
… of active galactic nuclei (AGNs) to probe fundamental physics. It focuses on the study of axion-like particles (ALPs) and the spin of supermassive black holes (SMBHs). Chapter 1 starts with a review of black holes as mathematical and astronomical objects and provides an account of the …
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UNCOVERING FUNDAMENTAL PHYSICS OF ENERGY MATERIALS WITH QUANTUM MECHANICS, MOLECULAR DYNAMICS, AND APPLIED MACHINE LEARNING
The preservation, manipulation, and conversion of energy is one of the greatest challenges of the 21st century. One of the most powerful tools we have to control it is to improve electronics and catalysts with materials science and engineering. Experimental techniques alone are not sufficient to …
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Gravitational waves and gauge fields in the early Universe
… paradigm of the early Universe, the exact microphysics that realize inflation are poorly constrained. Moreover, inflation generically leaves the Universe cold and empty. The fundamental physics underlying reheating, the dynamics that transition the post-inflationary Universe to a hot Big Bang, …
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Matter and forces in quantum field theory - an attempt at a philosophical elucidation
Physics and philosophy are not two independent disciplines. They share a common origin; both contribute significantly to our worldview, and in my opinion there remain several levels of mutual dependence between them — in particular in the areas where they impinge on each other: natural philosophy, …
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Search and characterization of pulsars in southern globular clusters: new methodologies and results from an S-band survey
… serve as powerful tools for precision astrophysics. Their stable emission enables tests of fundamental physics, studies of stellar evolution, and probes of the interstellar medium and Galactic structure. Globular clusters are particularly rich environments for pulsar studies. These dense …
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Simulation of iron impurity gettering in crystalline silicon solar cells
… tool and applet. The 12E simulator models the physics of iron impurity gettering in silicon solar cells during high temperature processing. The tool also includes a device simulator to calculate cell performance after processing. By linking input materials, processing, and cell performance, 12E …
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Relevant Operators of Particle Physics and Cosmology
<p>Although the Standard Model of Particle Physics can reproduce the results of all the experiments performed to this date, it can only be an effective theory of fundamental physics. However, treating the Standard Model this way brings its own set of challenges; namely, the coefficients of relevant …
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